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We are already falling back to SelectionDAG when encountering an shift with UB.
This adds the same checks for shifts with UB that get folded into arithmetic or
logical operations.
This fixes rdar://problem/22345295.
llvm-svn: 245499
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Summary:
Currently fast-isel-abort will only abort for regular instructions,
and just warn for function calls, terminators, function arguments.
There is already fast-isel-abort-args but nothing for calls and
terminators.
This change turns the fast-isel-abort options into an integer option,
so that multiple levels of strictness can be defined.
This will help no being surprised when the "abort" option indeed does
not abort, and enables the possibility to write test that verifies
that no intrinsics are forgotten by fast-isel.
Reviewers: resistor, echristo
Subscribers: jfb, llvm-commits
Differential Revision: http://reviews.llvm.org/D7941
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 230775
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Try to fold the multiply into the add/sub or logical operations (when
possible).
This is related to rdar://problem/18369687.
llvm-svn: 217978
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Extend the logical ops selection to also support non-native types such as i1,
i8, and i16.
Fixes rdar://problem/18330589.
llvm-svn: 217732
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This change adds support for immediate and shift-left folding into logical
operations.
This fixes rdar://problem/18223183.
llvm-svn: 217118
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